Patent US5211644A successfully refreshed from Google Patents.
US5211644A
Expired / Lapsed
US
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Process and apparatus for a dermal graft
Assignee: PMT Corp USA
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Filing: 1991-09-20
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Granted: 1993-05-18
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Expires: 2011-09-20
Abstract
Abstract The process and apparatus for an autologous dermal graft transfer provides for the easy and accurate placement of dermal grafts during plastic surgery, typically for the filling of wrinkles or scars.
Inventors
- 👤 Allen L. VanBeek
- 👤 Alfred A. Iversen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:09
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3468; A61B17/32; A61B17/322
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
98 words
Process for performing a dermal graft surgical procedure comprising the steps of: a. inserting a dermal needle and removing an obturator; b. inserting a guidewire and removing the dermal needle, leaving the guidewire in place; c. pacing a dermal dilator over the guidewire and removing the guidewire; d. passing a dermal transfer cannula over the dermal dilator, removing the dermal dilator; e. inserting a needle with dermal graft material attached thereto; f. using the cannula obturator to advance the needle through the dermal cannula until the needle exits the skin; g. pulling the dermal graft into final position.
Claim 2
Dependent Claim
98 words
Process for performing a dermal graft surgical procedure comprising the steps of: a. inserting a dermal needle and removing an obturator; b. inserting a guidewire and removing the dermal needle, leaving the guidewire in place; c. pacing a dermal dilator over the guidewire and removing the guidewire; d. passing a dermal transfer cannula over the dermal dilator, removing the dermal dilator; e. inserting a needle with dermal graft material attached thereto; f. using the cannula obturator to advance the needle through the dermal cannula until the needle exits the skin; g. pulling the dermal graft into final position.
Claim 3
Dependent Claim
112 words
Process for performing a dermal graft surgical procedure comprising the steps of: a. inserting a dermal needle and removing an obturator; b. inserting a guidewire and removing the dermal needle, leaving the guidewire in place; c. pacing a dermal dilator over the guidewire and removing the guidewire; d. passing a dermal transfer cannula over the dermal dilator, removing the dermal dilator; e. inserting a needle with dermal graft material attached thereto; f. using the cannula obturator to advance the needle through the dermal cannula until the needle exits the skin; g. pulling the dermal graft into position; h. removing the cannula; and, i. positioning the graft with tension applied through the suture.
Claim 4
Dependent Claim
112 words
Process for performing a dermal graft surgical procedure comprising the steps of: a. inserting a dermal needle and removing an obturator; b. inserting a guidewire and removing the dermal needle, leaving the guidewire in place; c. pacing a dermal dilator over the guidewire and removing the guidewire; d. passing a dermal transfer cannula over the dermal dilator, removing the dermal dilator; e. inserting a needle with dermal graft material attached thereto; f. using the cannula obturator to advance the needle through the dermal cannula until the needle exits the skin; g. pulling the dermal graft into position; h. removing the cannula; and, i. positioning the graft with tension applied through the suture.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |